Quote verification

This proves the quote below is recorded by Citatio exactly as displayed and has not been altered since it was committed and anchored. It documents Citatio's crawl observation; it does not imply endorsement by the source platform. The quote links to the original review.

“only €218 with a tax advisor”

Checks (re-run on this request)

• ✓ Signature — Ed25519 signature over the record hash, verified against the public key at /.well-known/citatio-signing.json
• ✓ Merkle inclusion — Leaf recomputed through the sibling path to the anchored root
• ✓ Public transparency log — Sigstore Rekor log index 2882354328

Proof data

Record hash (SHA-256)

9889e9dea8158ff35a5fa132a23e57115b05a9ceabbf06027af16d5f67f40513

Signature (Ed25519, base64)

rnrii36RiqL6DS/xObR1i0DW5cXGySty13Xh6tZwOXWbWEl+BB3FQ/dLc/4sR3dFI7kendHif4IS+SD6Bp8QCA==

Merkle root

a893faa173c6b378c8d050262e841ab57fdd89b71985eabc0906c40abd5b6a6c

Merkle path

["988ad8d8e0cd77dccdc4b84371e2e0734b77ef0b4c03a9190cc751d77b258c5c","40920614fdb83c044ea1555a45fcb3bf5fbbae1a92a7becd3e1ba853ed20d46f","587b7ad385d3e1d7615b168a1df250498e0d14a126440cdb6da43e8ec4bed056","eaa9896464bb5a988ada934e486be9ec5146d87d3457fac3ac0216ac096ba255","aee507a47bcb335094b94ae52ba3dec4d0285d99b0ec44a4fb809b24b49f0d5c","993fd3234a99f07c1247a2305854afae4595315ca41df6129eabcb42fc9f686e","d502bf8f2295afe97681ad472367c7490fe8adfb7820239e12e6160c1c8023f6","7208098a06904fbfcd5772c185bc57dc724345d62c3d61d5181e1e4d0111b3c0","0d2a72cd719678a22d4d60f8315680863bc3bc20ddead1890dffa9d075bbb9ca","65b6298ed2395ecbb258506e191f17348b0dbaa62933f9a55e01e407c87823d6","9a70a2dc5637257adaa1c1a4882a95a02a796d9d30b4266a0ea2f2831cdd31fd","650569b6d36872ec607d21e90b70105894b45e1eba915a8d7588d829e1115e8c","d116928dd89f0a9ea13414b0fe2d577ce3dd16007ed8754e9f46163a67e25fa0","c2523440f419decfbfbb1761ac468558734f6da135e5a329b4c6dba0ae899966","5153df72155ae00831ba1e4416296382c39280ea82c989972042c066f445006a"]

Anchored

2026-09-18

Public log entry

search.sigstore.dev, log index 2882354328 · entry 108e9186e8c5677a08a7…

Expected log hash

5510a497abfe2e680a39c301b0d905c2a575bae0a1f389fbdd7b86babf05240f The log entry's spec.data.hash.value must equal this value: the SHA-256 of the Merkle root string above. Recompute it yourself from the root to confirm.

Canonical record

{"dataset_version":"v1789619628558","kind":"published-quote","locale":"en","page":"theme:taxfix/billing/en","quote":"only €218 with a tax advisor","rating":3,"review_date":"2026-07-23","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=de.taxfix","v":1}

Verify in the public log

1. Open the Rekor entry (pre-filled with this proof's log index).
2. In the entry, compare spec.data.hash.value with the "Expected log hash" above: it is the SHA-256 of the Merkle root string (a893faa173c6…), which ties this proof's root to the log entry.
3. Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
4. The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
5. Locally, without any Citatio infrastructure: SHA-256 the canonical record (must equal the record hash), verify the Ed25519 signature against the public key, and fold the hash through the Merkle path (sorted-pair SHA-256) to reach the anchored root.